Case study:Blake Avenue, Mayes Brook

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Location: 51° 31' 56", 0° 6' 1"
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Project overview

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Status Planned
Project web site
Themes Flood risk management
Country England
Main contact forename Becca
Main contact surname O’Shea
Main contact user ID
Contact organisation Environment Agency
Contact organisation web site http://www.gov.uk/government/organisations/environment-agency
Partner organisations
Parent multi-site project
This is a parent project
encompassing the following
projects
No
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Project summary

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To enhance the current flood storage area for nature conservation, including target BAP species such as water vole. This can be achieved by reinstating natural earth banks and the creation of a marginal aquatic zone. To create BAP habitats such as reedbeds and standing water in the form of wetlands and backwater creation. To allow and improve public access to the brook and help encourage environmental awareness and social involvement with local wildlife. Blake Avenue is a side-spill flood alleviation area situated on the right bank of Mayes Brook 3139m², located 500m upstream of County Gardens flood alleviation area. The channel within this section is straight with a reinforced right bank incorporating a sluice, which is located in the middle for drainage following flood events. The earth-bunded flood storage area comprises well maintained grassland, which is cut 4-6 times a year during the growing season. The area is inundated 3-4 times a year and requires dredging every 5-10years. The site is EA-owned and lies directly adjacent to residential properties.

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Catchment and subcatchment

Catchment

River basin district Thames
River basin Roding, Beam and Ingrebourne

Subcatchment

River name Seven Kings Water
Area category 10 - 100 km²
Area (km2)
Maximum altitude category 100 - 200 m
Maximum altitude (m) 101
101 m
0.101 km
10,100 cm
Dominant geology Calcareous
Ecoregion Great Britain
Dominant land cover Suburban
Waterbody ID GB106037028170



Other case studies in this subcatchment: County Gardens, Mayes Brook, Fairlop Plain and Fairlop Water, Goodmayes Park, Mayes Brook, Loxford Water, Mayesbrook Climate Change Park restoration project, Seven Kings Water


Site

Name
WFD water body codes GB106037028170
WFD (national) typology
WFD water body name Seven Kings Water
Pre-project morphology
Reference morphology
Desired post project morphology
Heavily modified water body No
National/international site designation
Local/regional site designations
Protected species present No
Invasive species present No
Species of interest
Dominant hydrology
Dominant substrate
River corridor land use
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Project background

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Cost for project phases

Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname
Investigation and design
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Monitoring



Reasons for river restoration

Mitigation of a pressure Flood risk management
Hydromorphology
Biology Vertebrates
Physico-chemical
Other reasons for the project Community demand


Measures

Structural measures
Bank/bed modifications Bank reprofiling
Floodplain / River corridor Reedbed creation
Planform / Channel pattern
Other UK BAP habitat creation/restoration
Non-structural measures
Management interventions
Social measures (incl. engagement) Improved public access, Community Education
Other


Monitoring

Hydromorphological quality elements

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Before measures After measures Qualitative Quantitative

Biological quality elements

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Any other monitoring, e.g. social, economic

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Monitoring documents



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Supplementary Information

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